The Biden administration is restoring California's power to set its own auto pollution limits and is largely adopting its rules for trucks.

Tuesday, February 15, 2022 6:43 PM EST

The developments represent a revival of California's influence on the nation's climate and clean air policies, following four years in which President Donald J. Trump waged legal, political, and, at times, seemingly personal battles with the state. The Trump administration had stripped away California's authority to institute its own vehicle pollution standards, power that the state had enjoyed for more than 40 years.

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